Spring hypodermic needle

ABSTRACT

A needle that consists of two pieces, generally the second piece has two cylindrical parallel hollows; one hollow is much bigger than the other, the bigger hollow is for fluid entrance and the smaller hollow contains the first piece shaft; the first piece has a spring at the distal portion with an bicolored indicator for the movement of the first piece, and at the proximal portion it has a cylindrical shaft that moves forward and backward inside the smaller hollow of the second piece. When the hypodermic needle tip touches the skin or being inside a tissue the spring will be squeezed and the first piece will be situated backward in its primary position. Just when the tip of the needle enters any cavity or any vessel the spring will be freed and pushes the first piece forward with the change of the color of the bicolored indicator.

CROSS-REFERENCES TO RELATED APPLICATIONS

Not Applicable

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable

NAME OF THE INVENTOR

Rakan Elias Jamil Alhourani

STATEMENT REGARDING PRIOR DISCLOSURES BY THE INVENTOR OR A JOINTINVENTOR

Not Applicable

FIELD OF THE INVENTION

The present invention generally relates to a needle and a cannula thatallow us to know immediately when the tip of the needle or the cannulajust gets inside a cavity or a blood vessel.

BACKGROUND OF THE INVENTION

A spring hypodermic needle has many applications in medicine. When usingan ordinary needle to get a blood sample from or to inject medication ina blood vessel, we enter blindly through skin and tissue to reach thevessel, so it is possible to get in and continue out of the vesselwithout even know that we pass through it, which unfortunately willrupture the vessel and make discomfort to the patient, so oneapplication of the spring hypodermic needle that it prevents passingblindly through a vessel. Another application is with many emergencycases when we have a collapsed patient who needs immediate cannulainsertion, and in those cases the blood vessels are collapsed andattenuated, which makes it difficult to get in, so the usage of thespring hypodermic needle and cannula will make it easier and quicker toget inside a vessel and save patient's life. Another application is inlumber puncture procedure, as is known to all we enter blindly usingregular needles that may eventually induce injuries and seriouscomplications to the spine, and with using the spring hypodermic needlewe will know immediately when the needle just gets inside the spinalcavity, so we avoid and prevent serious complications.

SUMMARY OF THE INVENTION

The present invention is a needle with detecting reliable piece thatmoves forward by the force of a spring, when the tip of the needle justenters a lumen or a blood vessel or a cavity.

FIG. 1: The first piece.

FIG. 1A—The tip of the first piece; tip bevel direction: The first piecetip direction is almost perpendicular or is in an opposite direction tothe needle tip (bevel) direction.

FIG. 1B—The shaft:—Different lengths

Very small diameter comparing to needle's (the second piece) diameter.

FIG. 1C—The spiral spring part; it pushes the whole first piece forwardwhen the tip of the needle enters a cavity.

FIG. 1D—The bi-color indicator part: red/green

it is connected to the 3^(rd) part (the spiral spring part) and has twocolors; green in the front and red in the back.

FIG. 2: The second piece.

FIG. 2A—The needle tip: Two holes—The smaller is for the first piece tip

The bigger is for fluid entrance.

FIG. 2B—The shaft:—Different lengths

Has two cylindrical hollows; bigger hollow for fluid entrance and thesmaller hollow for the first piece shaft.

FIG. 2C—The spiral spring container: it contains the spiral spring partof the first piece.

FIG. 2D—The indicator part: it has a hole that shows the color inside(green or red).

FIG. 3—When the tip is inside a tissue:

FIG. 3A—The first piece tip is inside the needle tip (the second piece)

FIG. 3B—The spring is squeezed and the indicator shows the Green color.

FIG. 4—When the needle's tip just enters a cavity or a vessel:

FIG. 4A—The first piece tip moves forward by the force of the spiralspring so the first piece tip is displaced a little in front the levelof the second piece tip, and that occurs just immediately upon enteringany cavity or vessel.

FIG. 4B—The spring is freed and the indicator shows the Red color.

DETALED DISCRIPTION OF THE INVENTION

The spring hypodermic needle comprising two pieces: the first piece(FIG. 1) is the smaller piece that has four parts; bi-color indicatorpart (green and red) (FIG. 1D), spring part (FIG. 1C), shaft part (FIG.1B) and tip part (FIG. 1A). The second piece (FIG. 2) is the largerpiece that has two cylindrical parallel hollows; one hollow is muchbigger than the other, the bigger hollow is for fluid entrance andpassage, and the smaller hollow contains the first piece shaft, and incontinuation with the smaller hollow is the spring container (FIG. 2C)that contains the spring part (FIG. 1C) of the small piece, and incontinuation with the spring container is the indicator part (FIG. 2D)that has a hole to see the color inside. When the needle's tip is insidea body tissue (FIG. 3), the first piece tip will find resistance to moveforward in relation to the second piece, so the tip of the first pieceis at the level of the bevel / the tip of the needle and not in front ofit (FIG. 3A), at the same time the spring of the first piece is squeezed(FIG. 3B) and just stands by in this position till the tip of the firstpiece is freed, and that happens when the tip of the needle enters acavity or a lumen or a blood vessel. When the needle's tip is justentering any cavity or blood vessel (FIG. 4), there will be no moreresistance against the first piece tip movement and accordingly no moreresistance against the spring, so the spring will be freed and displacethe hole first piece forward including the tip, shaft and the bi-colorindicator part, so the tip of the first piece will be displaced forward(FIG. 4A); its level will be in front of the hole needle level and thecolor that is showing at the hole of the second piece's indicator partwill change from green to red (FIG. 4B).

What is claimed is:
 1. A needle that immediately detects its entrance ina cavity or a blood vessel, comprising two pieces: the first piece isthe smaller piece that has four parts; bi-color indicator part, springpart, shaft part and tip part. The second piece is the larger piece thathas two cylindrical parallel hollows; one hollow is much bigger than theother, the bigger hollow is for fluid entrance and passage, and thesmaller hollow contains the first piece shaft, and in continuation withthe smaller hollow is the spring container that contains the spring partof the small piece, and in continuation with the spring container is theindicator part that has a hole to see the color inside.
 2. A needle asset forth in claim 1, with variable lengths and sizes of the first andsecond pieces.
 3. A needle as set forth in claim 1, with variablerelations between first and second pieces.
 4. A needle as set forth inclaim 1, with variable colors or shapes of the indicator part of theneedle.
 5. A cannula that immediately detects its entrance in a cavityor a blood vessel, comprising the first piece as set forth in claim 1inside the trocar of the cannula in a design identical to claim 1detecting system.